The complex is formed according to the reaction: Fe3+ + SCN- ↔ Fe(NCS)2+ Addition of Fe3+ or SCN- will push the equilibrium to the right, forming more complex and intensifying the color; while ...

Cyanide salts and solutions are extremely poisonous. Reaction with acid liberates hydrogen cyanide gas, one of the most toxic and rapidly acting poisons. Solutions must be kept basic (pH>8). Gloves ...

The data booklet has some examples of complex ion-electron equations. As well as ions and electrons, they involve hydrogen ions (H +) and water (H 2 O). For example, consider permanganate ions (a ...